Collected issues from Volume 11 (1986) of Dr. Dobb’s Journal of COMPUTER Calisthenics & Orthodontia also known as DDJ.
"A Reference Journal for Users of Home Computers ... focusing on important advances, printing public domain software, and fostering vital reader interaction on technical matters."
This document uploaded with permission from the 6502.org Documents Archive where scans of all 15 volumes can be found.